Table 2.

Sources of alleles in 502 subgroup III isolates

Locus	Ancestral allele	No. of variant alleles
		Mutation	Import	Translocation
iga	iga2	1 (iga1)	1 (iga3)
IS1106A	Uncertain		8 (IS1106A4-11)*
pgm	pgm3	1 (pgm11)	1 (pgm19)
opaB	opaB92	1 (opaB93)†	2 (opaB94,5202)	12 (5× opaA; 4× opaD; 3× opaJ)†
opaD	opaD131	1 (opaD100)		8 (7× opaJ; 1× opaB)†
tbpB	tbpB1		28 (19× family 1; 6× family 4; 3× family 3)

^*The mechanism by which one additional IS1106A allele (IS1106A99) arose is unclear because that allele is associated with a 12-kb region that has not been sequenced (see supplemental data). 

^† The mutation in opaB93 is a 12-bp deletion. Translocations into opaB: from opaA: opaB102, 113, 115, 139, 141; from opaD: opaB100, 114, 131, 1131; from opaJ: opaB116, 140, 142. Translocations into opaD: from opaJ: opaD101, 108, 109, 110, 111, 112, 1101; from opaB: opaD94.